-Go to your market and download, Wallpaper Set and Save, install and open
-When you open the application select on set wallpaper
If your wallpapers are in a folder called wallpaper on your SD card then just set as default and select your picture
If not then select on settings/browse folders, select your folder, then save settings
Now you can select your picture, a cool feature is that you can swipe through pictures
Once you have selected your picture "Set Wallpaper"
The only problem that I have had with this application is that it wouldn't save your selected folder as the default. So every time you open the app you have to select your wallpaper folder again. Yeah its gonna kill a few seconds of your life, but who cares the app gets the job done lol.
Here are my results
Before with Banding
After with Wallpaper Set and Save, no more Banding!!
-The funny thing is I remember posting this issue on forums and stuff long time ago, and the responses that I got were "The X10 Screen doesn't support that many colors" "You need 2.1" etc etc. Well ha ha, LOL.